Sawmill machinery.



PATENTED DBG. 27, 1904.

`D.A.KE1\INB DZ. SAWMILL MMWIINEM.y

APPLICATION FILED JUNE 4, 1904.

SSHEETS-SHEET 1,

PATENTED DEC. 27, 1904.

D. A. KENNEDY. SAWMILL MACHINERY. APPLICATION FILED JUNE 4, 1904.

3 SHEETS-SHEET 2.

PATENTEE'EEG. 27, 1904.

D. A. KENNEDY.

SAWMILL MACHINERY.

APPLIOATION FILED JUNE 4, 1904.

3 SHEETS-SHEET 3.

y M.. I

Patented December 27, 1904.

UNITED STATES V,PATENT OFFICE.

DONALD A. KENNEDY, OF ASHLAND, WISCONSIN.

SAWMILL MACHINERY.

SPECIFICATION forming part of Letters Patent No. 778,366, dated December27, 1904. Application fllefl J' une 4, 1904. Serial No. 211,107.

To all whom zit may con/cern.' v

Beit known that I, DONALD A. KENNEDY, a citizen of the United States.and a resident of Ashland, in the county of Ashland and State ofWisconsin, have invented certain new and useful Improvements in SawmillMachinery;

and I do hereby declare that the following is a full, clear, and exactdescription thereof. My invention has for one of its objects to providefor stopping, straightening, and releasing one at a time the pieces ofllumber fed on transfer-conveyers to a resaw-feeder or elsewhere in asawmill. v

Another object of the invention is to control the feed of logs from aninclined log-deck to a carriage; and a further object of said inventionis to protect the link belts vor chains of transferconveyers,as well asrolls and other mechanism of log-decks.

vThese objects I attain by the construction and arrangement of partshereinafter particularly set forth with reference to the accompanyingdrawings, and subsequently claimed.

Figure l of the drawings representsa front elevation of a resaw-feedersimilar tothe one set forth in my Patent No. 747,979, of December 29,1903, fragments of transfer-conveyers that discharge onto theresaw-feeder from'y opposite sides of-the same, and mechanism linaccordance with my invention for stopping, straightening, and releasingpieces of lumber fed on the conveyers, a floor and gearing in this viewbeing in section; Fig. 2, a plan view of what is shown in the viewaforesaid, and Fig. 3 a sectional view'illustrating an application of myinvention to the incline of a logdeck in proximity to a carriage.

Referring 1by letter to Figs. 1 and 2 of the drawings, A indicates eachof the transferconveyers arranged as above stated. Lengthwise of thelink belts of the conveyers, preferably outside the same and Hush withor below the upper faces of said belts, are skids B, the lower ends ofthese skids being provided with lateral pivots b for connection with anysuitable supports. The forwardend of each skid is pivotally connected tothe upper end of a vertically-disposed pitman C, and the lower end ofthis pitman is likewise connected to an arm of a bell-crank lever D,fast ona rock-shaft E, for which bearings F are provided on the floorunder the resaw-feeder. The other arm of each bell-crank lever ispivotally connected to the lower end of a vertically-disposed stop-barG, and a link H connects each stop-bar with the adjacent pitman, thisconnection being at a suitable distance below the adjacent skid. Arms ofthe levers D are shown as having extensions I in the form of handles. Alink J is shown employed in connection with one of the pitmen andbellcrank levers in each set of same, and as a result of this connectionthe skid and stop-bar mechanism duplicated on opposite sides of theresaw-feeder may be operated by a movement Vof either of the handles I,although it is practical to omit one of said handles. It is alsopractical, but not as convenient, to do away with the link J and operateeach skid and stopbar mechanism independent of the other. It alsofollows thata single transferconveyer may be'employed to carry lumber tothe resaw-feeder or elsewhere in a sawmill, in which case only one ofthe skid and stop-bar mechanisms will be utilized.

In practice a pair of stop-bars Gr are-lifted by a throw of acorresponding pair of connected bell-crank levers D in the proper direcntion, and the upper ends of said bars are thus brought in the pathof apiece of lumber carried upward by the adjacent transfer-conveyer, theskids A in union with thepitmen C, linked to the aforesaid bars, beingthen in normal position. The stopped lumber automatically straightensitself if skewed on the conveyer, and when the stop-bars are swung downto clear said lumber the pitmen linked to said arms operate to lift thecorresponding skids at an angle'to said conveyer, the result being thatthe forward piece of the lumber is pushed on over said skids by thepressure of the lumber accumulating in the rear. The

forward piece of lumber then comes againv u'pon the conveyer and isfinally discharged onto the resaw-feeder or other support. By propermanipulation of the skid and stop-bar mechanism the lumber ismechanically alined. with the resaw-feeder or other support and fedtheretol piece by piece, the elevation of the skids relieving the linkbelts of the conveyer from friction on the stopped lumber.

Then the skid and stop-bar mechanism is duplicated, to be operated inconjunction with two opposite transfer-conveyers and the coupling-link Jis employed, one set of skids are lifted when the other set are lowered,and the same is true of the stop-bars.

ln Fig. 3, A indicates the incline of a logdeck and B one of a pluralityof skids pivotally adjustable between the sides of said incline. Thepivot connection of the skid with the log-deck incline is a rod engagingthe lower ends of both, and for a certain distance from the saw-linesaid skid is by preference normally parallel to a head-block, itsremainder beingl then approximately parallel to said incline slightlybelow the surfaces on which the logs descend. In normal position thelower portion of each skid B of the `preferred form extends above thelog-deck, and its upper end is pivotally connected to an extremity of avertically-disposed pitman C, likewise connected to an arm of a lever D,fast on a rock-shaft E, another arm of this lever being in pivotalconnection with the lower end of a vertically-disposed stop-bar Gr,connected by a link H with the pitman aforesaid. An extension I of oneof the several levers D is coupled to a pitman K, and this pitman isoperated by steam or other suitable power. Logs rolling` down theincline of the deck aforesaid are successively stopped by the bars G intheir path and properly alined against said bars. The skids B', of whichthere may be any suitable number, extend under a log stopped against thebars G, and if the pitmen C be lifted said skids will be swung upwardand said bars retracted out of the path of the log. As a result ofupward swing on the part of the skids and clearance of the stop-bars thelog is discharged onto the adjacent carriage. Lifting of the skidsprevents the log from rolling on other mechanism (not shown) in thelog-deck, and when lifted the upper ends of the skids and the pitmen Ccome in the path of another descending log to prevent the same fromrolling far-ther down the incline of the deck until said skids and thestop-bars G are restored to normal position.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a transfer-conveyer, pivotal skids lengthwise ofthe convey'er-belts and flush with or below the upper faces of same,suitably connected and mounted bell-crank levers having arms thereofcoupled, by pitmen, with the skids forward of their pivots; stop-barsconnected to the other arms of said levers to be lifted forward of saidskids in the path of material on the conveyor, and a link connectingeach stop-bar with a pitman. g

2. The combination of opposite transferconveyers, pivotal skidslengthwise of the conveyer-belts and fiush with or below the upper facesof same, suitably connected and mounted bell-crank levers each havinganarm thereof coupled, by a pitman, with a skid forward of its pivot; astop-bar connected to the other arm of each of said levers to be liftedforward of a skid in the path of material on a conveyer, a linkconnecting each stop-bar with a pitman, and another link in connectionwith one of the pitmen and bell-crank levers in each set of same.

3. The combination of a logorlumber way, pivotally-adjustable skidslengthwise of said way, a rock-shaft having lever-aml-pitman connectionwith the skids beyond the pivots of same, stop-bars arranged in leverconnection with the shaft to have their play `forward of theskid-pitmen, and means for actuating said shaft.

4. The combination with opposite transferconveyers, of means forstopping, straightening and releasing pieces of lumber fed successivelyou each conveyor, the release from one conveyer alternating with a stopof material fed on the other.

5. The combination of a loger lumber way` pivotal skids lengthwise ofsaid way. reciprocal vertically-movable stop-bars, and means forsimultaneous adjustment of said skids and stopbars.

rl`he combination with a log or lumber way, pivotally-zuljustable skidslengthwisel of said way, a rock-shaft having lever-aml-pitman connectionwith the ends of the skids farthest from the pivot of same, stop-bars inlever connection with the shaft, a link connecting each stop-bar with askid-pitman, and means for actuating said shaft.

In testimony that l claim the foregoing l have hereunto set my hand, atAshland, in the county of Ashland and State of \Visconsin, in thepresence of two witnesses.

DONALD A. KENNEDY.

litnessesr M. KENNEDY, J. J. McDoNALn.

lOO

